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Calwaterbear |
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#1
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Member ![]() ![]() Group: Members Posts: 207 Joined: 15-November 14 From: United States Member No.: 18,123 Region Association: Central California ![]() |
Ok time to set-up my new/used 2 post lift. I poured a 14'X 25' pad, let it cure for 3 weeks.
So I will drill into the concrete and use 3/4 X 10'' wedge anchors. they will be 8" deep. obviously the holes need to be drilled in exactly the right places, not only for each post, but also, the 2 posts have to be set at the exact width (dictated by the bar across the top, between the 2 posts). so do i set up the posts, bolt on the top, then drill down through the feet? Or use a template, put in the anchors, then drop the posts onto the anchors? Bit of an issue is i am working alone, and even with a bobcat 763, i have not figured out a way to get the posts vertical yet, i plan on calling in my propane guy, who has a real live Ferrari crane on his service truck to lift em upright and position them. Tech guys at Greg Smith say to drill the holes a couple of inched deeper than you will be anchoring at - so if you screw up, instead of having to cut off the anchor - you just drive it down in the slab. That seems like a good idea, but what if, while lowering the post, you miss and hit the top of the anchors, that would probably drive them down into the slab - No? I'm probably overthinking this, but I'm hoping to draw from the experience of others who have gone before me on this venture! |
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Curbandgutter |
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#2
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Senior Member ![]() ![]() ![]() Group: Members Posts: 565 Joined: 8-March 13 From: Murrieta CA Member No.: 15,637 Region Association: Southern California ![]() ![]() |
I don't know if you did this but I would have dropped 2 #4 (1/2") rebars perpendicular to each post (parallel to the car) 8 ft long near the location of each anchor. Then thicken the concrete along the rebar. Then I would have set 2 #4 rebars perpendicular to each anchor to tie the post together and thicken the slab underneath each rebar. Then when you cast your concrete you will have 3 sets of reinforced beams along the length and perpendicular to each post. Also the rebar will provide incredible shear strength to the shear cone of the anchor bolt. That's the way I did mine.
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